Neoplasia

Question 1

Name 2 MRI findings positively correlated with the likelihood of seizure activity.

Dewey

Answer 1

Marked gadolinium contrast enhancement
Frontal lobe tumor location
Subfalcine or subtentorial herniation

Question 2

What 3 mechanisms can cause acute development of neuro signs in a patient with brain neoplasia?

Dewey

Answer 2

1. Exhaustion of compensatory mechanisms
2. Hemorrhage
3. Obstructive hydrocephalus

Question 3

T/F. Neoplasia should be suspected in a patient with a recent onset of seizure activity after 6 years of age.

Dewey

Answer 3

False. After 5 years of age.

Such patients may appear neurologically normal interictally.

Question 4

T/F

The “ring enhancement” phenomenon, in which a circular ring of contrast enhancement surrounds non-enhancing tissue is specific for neoplasia.

Dewey

Answer 4

False, it is nonspecific and has been associated with several neoplastic and non-neoplastic brain diseases.

Although often associated with gliomas.

Question 5

T/F.

CSF analysis tends to yield fairly nonspecific information in brain tumor cases.

Dewey

Answer 5

True.

CP carcinoma more likely to have >80 mg/dl protein.